Green Car Congress  
Go to GCC Discussions forum About GCC Contact  RSS Subscribe Twitter headlines

« DNV GL paper suggests near-term success for LNG in shipping; alternative fuel mix to diversify over time | Main | Cooperative SO2 and NOx aerosol formation in haze pollution »

Print this post

LCFS pathways for renewable diesel produced in Singapore from NA tallow and SE Asian fish oil

29 January 2014

The staff of the California Air Resources Board has posted six new applications for pathways for the Low Carbon Fuel Standard (LCFS), two of which are from Neste Oil for renewable diesel (RD) produced at its plant in Singapore from (a) North American tallow and (b) Southeast Asian fish oil. The other applications under consideration are for landfill gas to LNG and CNG; canola to biodiesel; and corn ethanol and sorghum ethanol.

The baseline carbon intensity for diesel in the LCFS lookup table is 98.03 gCO2e/MJ.

North American tallow RD. Neste Oil Singapore Pte Ltd. produces approximately 250 million gallons of renewable diesel (RD) from multiple feedstocks at its plant in Singapore. Neste applied for a Low Carbon Fuel Standard (LCFS) pathway covering the RD produced from North American tallow at its Singapore plant.

This feedstock is rendered in North America and shipped by ocean tanker an estimated 7,741 nautical miles to the Neste plant. The energy consumption data for the rendering process was taken from the existing LCFS pathway for RD produced in California from US-sourced tallow. (CI = 39.33 gCO2e/MJ, or 19.65 gCO2e/MJ for a lower-energy rendering technology; rendering is the most GHG-intensive portion of the process.)

Once the rendered tallow has been converted to renewable diesel, the finished fuel is transported an estimated 7,677 nautical miles by ocean tanker to Los Angeles.

Neste’s process generates a propane-rich off-gas as a co-product. The high pressure portion of this off-gas (both high- and low-pressure gas is generated) is conveyed via a dedicated pipeline to a hydrogen plant located on Jurong Island. There it displaces natural gas that would otherwise have been consumed as both a process fuel and a feedstock at the steam-methane reformer. The hydrogen supplied at the Jurong Island plant is piped back to the Neste plant where it is used for hydrotreatment. The low-pressure propane-rich off-gas is sent to a natural gas steam boiler that provides process heat to the RD plant.

Neste calculated the pathway carbon intensity (CI) to be 49.49 gCO2e/MJ. This includes a 3.09 gCO2e/MJ credit for the natural gas displaced by the propane-rich off-gas from the RD plant. This proposed carbon intensity value includes feedstock rendering; transportation of the rendered feedstock to the refinery; renewable diesel production; finished fuel transportation to California; and vehicle tailpipe emissions. Staff recommends that Neste Oil’s application for the pathway be approved.

In March 2013, Neste had submitted another application for RD from Australian tallow, produced at Singapore, with a CI of 33.46 gCO2e/MJ.

Fish oil. Neste also applied for a Low Carbon Fuel Standard (LCFS) pathway covering the RD produced from Southeast Asian fish oil at the Singapore plant. This feedstock is rendered in Vietnam and shipped by truck approximately 50 miles to the Cantho terminals and transferred to an ocean tanker. The ocean tanker then travels an estimated 585 nautical miles to the Neste plant.

Since rendering energy consumption data is not readily available, Neste used a study by Enerfish. Once the rendered tallow has been converted to renewable diesel, the finished fuel is transported an estimated 7,677 nautical miles by ocean tanker to Los Angeles.

Neste calculated its pathway CI to be 30.48 gCO2e/MJ, including the 3.09 gCO2e/MJ credit for natural gas displacement as above. Staff also recommended that this pathway be approved.

January 29, 2014 in Brief | Permalink | Comments (0) | TrackBack (0)

TrackBack

TrackBack URL for this entry:
http://www.typepad.com/services/trackback/6a00d8341c4fbe53ef01a3fcae57f8970b

Listed below are links to weblogs that reference LCFS pathways for renewable diesel produced in Singapore from NA tallow and SE Asian fish oil:

Comments

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Green Car Congress © 2013 BioAge Group, LLC. All Rights Reserved. | Home | BioAge Group